[Skiboot] [PATCH] hdata: Ignore unnamed memory reservations.
Oliver O'Halloran
oohall at gmail.com
Fri May 26 16:18:29 AEST 2017
Hostboot should name any and all memory reservations that it provides.
Currently some hostboots export a broken reservation covering the first
256MB of memory and this causes the system to crash at boot due to an
invalid free because this overlaps with the static "ibm,os-reserve"
region (which covers the first 768MB of memory).
According to the hostboot team unnamed reservations are invalid and can
be ignored.
Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
---
hdata/memory.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/hdata/memory.c b/hdata/memory.c
index 0c6c0811f61a..26c8a9837b73 100644
--- a/hdata/memory.c
+++ b/hdata/memory.c
@@ -409,7 +409,7 @@ static void get_hb_reserved_mem(struct HDIF_common_hdr *ms_vpd)
{
const struct msvpd_hb_reserved_mem *hb_resv_mem;
u64 start_addr, end_addr, label_size;
- int unnamed = 0, count, i;
+ int count, i;
char *label;
/*
@@ -463,9 +463,9 @@ static void get_hb_reserved_mem(struct HDIF_common_hdr *ms_vpd)
memcpy(label, hb_resv_mem->label, label_size);
label[label_size] = '\0';
+ /* Unnamed reservations are always broken. Ignore them. */
if (strlen(label) == 0)
- snprintf(label, 64, "hostboot-reserve-%d", unnamed++);
-
+ continue;
prlog(PR_DEBUG, "MEM: Reserve '%s' %#" PRIx64 "-%#" PRIx64 " (type/inst=0x%08x)\n",
label, start_addr, end_addr, be32_to_cpu(hb_resv_mem->type_instance));
--
2.9.3
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